Exercise device



FIG. 1 is a top, front and left side perspective view of an exercise device showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The right side is a mirror image of the left side. The bottom is free of ornamentation. 

We claim the ornamental design for an exercise device, as shown. 